Final science exam

1) keep moving until acted upon 2) need more force to get something moving 3) opposite reactions

Describe and draw a picture of Newton's 3 laws of motion

3000 N

How much force is needed to accelerate a 1000 kg car at a rate of 3 m/s/s

700 miles/13hrs = 53.8 mph

If a bus travels 700 miles in 13 hours, what is the average speed? Make sure to show your work.

4 m/s squared

calculate the acceleration of a helicopter that has a mass of 4500 kg and a net force of 18000 N

KE = 1/2 (300g x 3 m/s x 3 m/s) =1350 N

calculate the kinetic energy of a 300g book falling at 3 m/s

GPE = 25g x 9.8 m/s (2) x 6m = 1470 N

calculate the potential energy of a 25 g ball that is sitting on top of a 6m shelf. Be sure to show your work.

833 kg

find the mass of a football player who has 1250 N of force and has an acceleration of 1.5 m/s/s

32 cm/10 sec = 3.2 cm/sec

if a toy car travels 32 cm in 10 seconds, what is the average speed? Make sure to show your work.

P= mv

what is the formula for calculating momentum?

36,400 kg x m/s

what is the momentum of a car with a mass of 1300 kg traveling at a speed of 28 m/s/s

speed = distance/time

What is the formula for calculating speed

KE = 1/2mv(2)

What is the formula for kinetic energy